The situation is weird. I have a UIWebview in my app. While I click an external URL this webview will be used to show that webpage. And my view has a function called "open it in safari". For some aspx webpages, the internal webview can't show the whole webpage but only a part of it, so I clicked open it in safari but safari couldn't fully load it either. But occasionally these two all work fine.
I've been working on this this whole day and still no clue...thank anyone who might give me some suggestions.